Mortising machine



June 25, 1929. F. w. WAPPAT MORTISING MACHINE Filed April 1 1925 6 Sheets-Sheet l l h I. 7 En wnwsssss INVENTOR June 25, 1929. I: w. WAPPAT MORTISING MACHINE Filed April 18, 1928 6 Sheets-Sheet INVENTOR F. W. WAPPAT June 25, 1929.

MORTIS ING MACHINE Filed April 18, 1928 6 Sheets-Sheet INVENTOR villi 74'! W June 25, 1929. F. w. WAPPAT MORTISING MACHINE 6 Sheets-Sheet Filed April 18, 1928 INVENTOR F. W. WAPPAT June 25, 1929.

' MORTISING MACHINE Filed April 18, 1928 6 Sheets-Sheet CIIZI] INVENTOR June 25, .1929. F. w. WAPPAT 1,718,324

MORTISING MACHINE Filed April 18, 1928 e Sheets-Sheet '6 Patented June 25, 1929.

UNITED STATES FRED W. \UAPPAT, OF PITTSBURGH, PENNSYLVANIA.

MORTISING MACHINE.

Application filed April 18,

This invention relates to mortising ma chines. It has for its principal objects the provision of an improved construction, which permits the cutting of mortises of different widths without changing the cutter, and which permits the cutting of the mortise for receiving the barrel of the lock and also that for receiving the face plate or flange of the lock with one cutter and without re-positioning the machine. A'further object is the provision of means whereby the various ad-' justments required for cutting mortises of different lengths and widths may be quickly and easily made. ()ne embodiment of the invention is shown in the accompanying drawings, wherein Figure l is a sine elevation of the machine clamped in position upon the edge of a door and with the parts in the position of adjust ment for cutting the slot 3 for the face plate of the lock. Fig. 2 is a similar view looking from the opposite side of the machine. Fig. is a plan view with the parts adjusted for cutting the slot 2 for the bar el of the lock. Fig. l is a front elevation w 11 the parts in the same position as in Fig. Fig. 5 is a rear elevation with the parts in the position of Fig. 1. And Fig. 6 is a section on the line VIVI of Fig. 5 with the parts also in the same position in Figs. 1, 2 and 5.

Briefly stated, the machine in its preferred form is as follows: A frame is clamped to the edge of the d or to be moi ed, and on this is slidably mounted for vertical movement a carriage. which in turn pports the tool carrier. This tool carrier is pivo ed for swinging movement transversely of the line of movement of the carriage. The cutter is of the usual type and suitably power driven by a motor mounted on the tool carrier. A lock holds the tool carrier against swinging movement in its central position when a mortise is to be cut having a width equal to the diameter of the cutter. lVhen a wider slot is to be cut, the lock is released and suitahle stops are adjusted to limit the horizontal swing of the tool carrier. This permits the cutting of a slot of any desired width corresponding to the swing of the tool carrier as the carriage is moved up and. down. The ordinary door lock mortise comprises a relatively deep narrow slotor mortise for the barrel of the lock and a wider shallow slot for the face plate of the lock, and the construction, as just described, permits the cutting of both slots with the one cutter and without changing the 1928. Serial No. 270,945.

position of the machine. Movable stops are also provided for limiting the cndwise mo vement of the carriage when the barrel slot is being out, such stops being moved out of the way when the longer face plate slot is cut. In the particular apparatus shown and dcscribcd, the lock and mo able stops, and the tool shaft are so connected that the parts work in unison, the lock being released and the stops moved to inoperative position, when the limiting device for holding the tool shaft against cndwise movement placed in operative position; all of which will be readily understood from the drawing in connection with the detailed description following.

Referring to the drawings, 1 is a door in which a mortise is to be cut comprising the relatively deep, narrow slot 2 (Figs. 1 and 3) for the barrel of the lock and the relatively shallow slot 3, which is of greater length and width than the slot 2. The frame of the machine, which is clamped to the door, comprises a pair of transverse bars or brackets 4 and 5 secured rigidly together by the vertical guider rods 6 and 7, the front face of the bar 7 being formed into a rack 8 (Figs. 2 and 4-) for the purpose later described. Each of the brackets 4t and 5 is provided with a transverse guide rod 9 which rods slidably support the pairs of clamping aws 10. 1o. The jaws are moved in and out by the threaded rods 11, 11 each having a right hand thread at one end and a left hand thread at the other end. These rods are secured against endwise movement in the tongues or lugs 12, 12 integral with the brackets a and 5, this being accomplished by the use of pins 13, 13 (Fig. 3) extending through the lugs and engaging suitable grooves 14, 14 in the rods. The rods are provided with hand wheels 15, 15 for turning them. The lugs 12, 12 also carry the stop screws 16, 16, which are threaded through the lugs and are locked in adjusted position by the wing nuts 17, 17.

Mounted for vertica movement on the guide bars 6 and 7 is the carriage 18, such carriage being in the form of an iron or steel casting having the upright arms 19 and 20 (Figs. 1, 2 and 5) whose ends are bored out so as to receive the guide rods 6 and 7. The carriage is moved up and down by means of the pinion 21 carried by the shaft 22 journalled in the lug 23 at the upper end of the arm 20. The pinion engages the rack 8 and is rotated by the handle 24 secured to the shaft 22.

by the tool 12.

Mounted on the carriage 18 for swinging movement around the center line 25 (Figs. 2, 5 and 6) is the tool carrier 26. This tool carrier is in the form of a casing (Fig. 6) which surrounds the motor 27, the gears 28 and 29 and the tool shaft 30. The center of oscillation 25 also constitutes the axis of rotation of the shaft 3170f the motor 27 carrying the gear 28. The shaft 31 is mounted in the roller bearings 32 and 33, the bearing 32 being located in the boss 34 (Fig. 6) forming a part of the head 35 of the motor casing, which is reinovably secured to the motor casing by bolts (not shown). The boss 34 acts as the pivot for the'tool carrier, as it has a bearing fit in the flange 36 integral with the carriage 18. The boss is held in place with its shoulder 37 engaging the flange 36 by means of the plate 38 which engages the outer face of the flange 36 and is secured in position by the three stud bolts 39 (Figs. 5 and 6).

The tool shaft 30 is splined in a sleeve 10, and has its forward end provided with a spiral groove 11 for removing the chips cut This tool is an ordinary inort-ise cutter comprising a pair of spaced cutting lips shaped as indicated in Figs. 5 and 6. The sleeve at) has keyed thereto the driven gear 29, heretofore referred to, and is journalled in the pair of roller bearings 43 and 1 t. The shaft 30 is thus rotated from the motor, but is free to be moved endwise by a suitable knob or handle 15, shown only in Fig. 1. A guard 46 surrounds "the tool on three sides, being secured to the tool carrier 26 by means of the bolts 46 (Fig. 6). The flange 17 integralwith the carriage casting 18 and lying between the inner face of the guard 16 and the shoulder 48 of the tool carrier casting 26 provides a guide forthe tool carrier in its swinging movements.

The tool carrier is limited in its swinging; movements by the two-stop screws l9, 19 threaded through. the upright arms 19 and 30 of the "arriage and held in adjusted position by the lock nuts 50, 50. These screws are adapted to engage the surfaces 51, 51 (Fig. 5) formed on the sides of the barrel (Figs. 4 and which forms a part of the tool carrier casting 26.

' In order to lock the tool carrier in the can tral position shown when a slot is being cut of a width correspoi'iding to the diameter of the tool 42, the locking bolt is provided (Figs. 1 and 3), such bolt being slidably mounted in the lug 54 forming an'extension of the lower end of the carriage arm 19. This bolt is yieidingly pressed to the left (Fig. l) by the coil spring 55, so that its end engages a socket 56 in the tool carrier casting. The bolt has on one side a rack (Fig. 3) which is engaged by the pinion 79 secured to the vertical shaft 57 journalled at its ends in the lugs at the upper and lower ends of the carriage arm 20. This shaft has secured to its two ends the arms 58, 58 carrying the stops 59, 59 in which are mounted the stop screws 77, 77. lVhen the steps 59, 59 are in the position shown in Figs. and 4, they are in alinement with the screws 16, 16, and thus limit'the up and down movement of the carriage, the setting being such that the tool cuts the length of the mortise 2 for receiving the barrel of the lock. At this time, the locking bolt 53 engages the socket 56 (Fig. 1), so that the tool carrier is held against rocking movement and the tool 42 is maintained on the '\-*ei';';ical

center line 61 (F ig. of the machine. On the other hand, when it is desired to cut the longer slot 3 for the face plate of the lock, the

the carriage can move a greate' distance up and down until the screws 16, 16 engage the stop surfaces 62, 62, at the upper and lower ends of the carriage (Fig. This rotation of the shaft 57 to more the stops 59, out of the way also retracts the bolt 53 from its socket 56, so that the. tool carrier 26 is free to oscillate laterally, this being necessary in orderto cut the face plate slot 3 which has a width greater than. the diameter of the tool.

The collar 60 onthe tool shaft 30 regulates the depth of the mortise 2, the engagement of such collar with the surface 61 (Figs. 1 and 6) limiting the movement of the shaft to the left. The set screw 80 secures the collar in its position of adjustment. Pivotally mounted in the lugs 63 and 6 1 ig. 1) projecting from the side of the tool carrier 26 is the shaft such shaft being held against end.- wise movement by the collars 66 and 67 pinned to the shaft. The collar 67 carries a pin 75 which engages a pin 76 carried by a collar pinned to the *ertical shaft 57. Also mounted on the shaft 65, and held against rotary and longitudiinil movement thereon, is a collar 68 having a laterally projecting arm 69 with a hook end adapted to engage a groove 70 in the collar 60. \Vhen the parts are in this position, a latch 71 (Fig. 1) pivoted to the casting 26 at 72 engages a notch 73 in the collar 67 pinned to the shaft 65. Under these conditions, the shafts and 57 are turned so that the bolt 53 is withdrawn from the socket 56, and the stops 59 are swung out of alinement with the stop screws 16, 16. The spring tends to push the bolt 53 to the left (Fig. 1) and rotate the shafts 57 and 65 in a direction to disen age the arm 69 from the collar 60, but this isp're'ventcd by the latch 71. The coilar 68 is adjustable along the shaft 65 and is held in position by the set screw 78. This arm is so positioned on the shaft 65 that when the arm engages the groove in the collar 60. the tool 42 occupies the position shown in Fig. 1, which is just far enough advanced to cut the face plate mortise 3 of the Proper depth. In adjusting, the collar 60 is first positioned so that its front face lies back from the surface 61 adistance equal to the depth of the slot 2 to be cut. It is then secured by the set screw and the collar 68 is adjusted on its shaft so that its center line a (Fig. 1) lies to the right of the center line of the slot in the collar 60 a distance equal to the depth of the slot 3 to be cut. This will bring the parts to the position shown in Fig. 1 when the arm is brought into engagement with the groove in the collar.

The operation of the machine is as follows, assuming that it is clamped in position on a door, as shown in the drawings: The latch 7]. being released, the spring 55 moves the bolt to locking position rotating the shafts 57 to throw the stops 59, 59 into alinement with the screws 16, 16 (see Figs. 3 and 4) and also rotating the shaft 65, thus swinging the arm 69 to open position, as indicated in Figs. 3 and 4. The tool carrier 26 is now on center with respect to the longitudinal center line of the machine, as indicated in Figs. 4 and 5, and locked against swinging movement by the bolt 53. The stop screws 16, 16 are now adjusted so that the up and down movement of the carriage is equal to the length of the slot 2 to be cut, and so that the axis of rotation of the tool. when the carriage is in mid-position is in line with the horizontal center line 0 (Fig. 1) of the mortise to be cut. The set screws 77, axial of the stops 59, 59 are adjusted so that when these stops are swung into alinement with the screws 16. 16, the movements of the carriage will be shortened a distance equal to the difference in length between the face plate slot 3 and the barrel slot 2. The final adjustment is that of the screws 49, 49, which limit the lateral swinging movement of the tool carrier after the bolt 53 is released. The screws are set btit'li equal distances from the surfaces 51, 51 (Fig. and the sum of these distances is equal to the distance by which the width of the face plate slot 3 exceeds that of the barrel slot 2. The machine is now adjusted to cut both slots, the barrel slot 2 being cut first. This is done as in all mortising machines. The motor 27 is started, and the operator pushes in the shaft 30 with one hand and rotates the crank 24 to move the carriage and tool carrier up and down so that the carriage aiternately engages the ends of the screws 16, 16 The movement inward of the tool shaft 30 is limited by the collar 60, and when this occurs, the operator knows that the slot 2 has been cut to its full depth.

In order to cut the face plate slot 3, the arm 69 is now brought into engagement with the groove in the collar 60, the swinging of such arm to the left (Fig. 4) permitting the gravity latch 71 to engage the notch 73 in the shaft 65 and thus lock the parts in position. The rotation of the shaft 65 causes the rotation of the vertical shaft 57, as heretofore described, thus moving the bolt 53 to the right (Fig. 1) out of the socket 56 and swinging the stops 59, 59 out of alinement with the stop screws 16, 16, as indicated in Figs. 2 and 6. The tool shaft 30 is now held against endwi'se movement by the arm 69, and the cutter 42 projects past the face of the door 1 into the barrel slot 2 a distance equal to the depth of the slot 3. In cutting out the slot 3, the operation is the same as that described for cutting out the slot 2, except that the tool carrier 26 is swung laterally from its central position, first in one direction and then in the other as the carriage is mo cd up and down, thus cutting the slot 3 which is wider than the slot 2 by the sum of the distances between'the surfaces 51, 51 (Fig. 5) and the ends of the stop screws 49, 19. The length of the up and down stroke of the carriage is increased by the removal of the stops 59, 59 out of the way so that the slot 3, which is cut at this time, is longer than the slot 2 by a distance corresponding to the length of such stops 59, 59, the ends of the screws 16, 16 engaging the carriage at the surfaces 62 and 62 (Figs. 5 and 6) when the carriage reaches its extremes of movement.

Aside from its use in cutting both the barrel and face plate slots for locks, the machine is of use wherever the cutting of mortises or slots of different Widths is required, this being possible within a relatively wide range without changing the cutter as would otherwise be required in order to cut slots of varying widths.

\Vhat I claim is:

1. In combination in a mortising machine, clampingmeans for securing the machine in position upon a member to be mortised, a carrier supported on the clamping means for movement longitudinally of said member and transversely thereof, a tool journalled in the arrier and movable in the direction of its length toward and from said member, driving means for rotating the tool, adjustable stop means for limiting the movement of the carrier longitudinally of said member, other adjustable stop means for limiting the lateral movement of the carrier, and a releasable lock for holding the carrier in central position against lateral movement.

2. In combination in a mortising machine, a frame, means for clamping the frame in position, a carriage mounted for movement longitudinally of the frame, a tool carrier mount ed for lateral movement transversely of the direction of movement of the carriage, a mortising tool journalled in the tool carrier and movable in the direction of its length, driving means for rotating the tool, a releasable lock for holding the tool carrier against lateral movement, two sets of stop means for limiting the movementof the carriage longitudinally of the frame, one of which sets is movable out of the way to permit the other set to be effective as limiting means, a connection between said lock and the movable stop means, so that the lock is released when said set of movable stops is moved out of operative position, and other adjustable stop means for limiting the lateral movement of the tool carrier.

8. In combination in a mortising machine, a frame, means for clamping the frame in position, a carriage mounted for movement longitudinally of the frame, a tool carrier mounted for lateral movement transversely of the direction of movement of the carriage, a mortising tool journalled in the tool carrier and movable in the direction of its length, driving means for rotating the tool, a releasable lock for holding the tool carrier against lateral movement, two sets of stop means for limiting the movement of the carriage longitudinally of the frame, one of which sets is movable out of the way to permit the other set to be effective as limiting means, and other adjustable stop means for limiting the lateral movement of the tool carrier.

l. In combination in a mortising machine, a frame, a means for clamping the frame in position, acarriage mounted for movement longitudinally of the frame, a tool carrier mounted for lateral movement transversely of the direction of movement of the carriage, a mortising tool ournalledin the tool carrier and movable in the direction of its length, driving means for rotating the tool, a releasable loclr for holding the tool carrier against lateral movement, adjustable means for limiting the endwise movement of the tool, a device for engaging saidmeans and holding the shaft against endwise movement, connections between said device and the lock whereby the lock is released when said device is moved to its position of engagement with said means, and other adjustable stop means for limiting the lateral movement of the tool carrier,

5 In combination in a mortising machine, a frame, a means for clamping the frame in position, a -arriage mounted for m'oven'lent longitudinally of the frame, a tool carrier mounted for lateral movement transversely of the direction of movement of the carriage, a mortising tool journalled in the tool carrier and movable in the direction of its length, driving means for rotating the tool, a releasable loclr for holding the tool carrier against lateral movement, adjustable means for limiting the endwise movement of the tool, a device for engaging saidineans and holding the shaft against endwise movement, and other tudinally of the adjustable stop means for limiting the lateral movementof the carrier.

6. In combination in a mortising machine, a frame, means for clamping the frame in position, a carriage mounted for movement longitudinally of the frame, a tool carrier mounted for lateral. movement transversely of the direction of movement of the carriage, a mortising tool journalled in the tool carrier and movable in the direction of its length, driving means for rotating the tool, a releasable lock for holding the tool carrier against lateral moven'ient, two sets of stop means for limiting the movement of the carriage longiframe, one ofwhich sets is movable out of the way to permit the other set to be'eil'cctive as limiting means, means for limiting the endwise movement of the tool, a device for engaging said means and holding theshaft against endwise movement, and connections between said device and the lock and the set of movable stop means whereby the lock is released and said set of movable stop means moved out of operative position when said device is moved to operative limiting position, and other adjustable means for limiting the lateral movement of the tool carrier.

7. In combination in a mortising machine,

a frame, means for clamping the frame in position, a carriage mounted for movement longitudinally of the frame, a tool carrier pivoted to the carriage for swinging movement transversely of the direction of movement of the carriage, a mortising tool journalled in the tool carrier and movable in the direction of its length, a motor mounted on the carrier having driving connections with the tool, and adjustable stop means for limitthe swinging movement of the carrier.

8. In combination in a mortising machine, a frame, means for clamping the frame in position, a carriage mounted for movement longitudinally of the frame, a tool carrier pivoted to the carriage for swinging movement transwnrsely, of the direction of movement of the carriage, a mortising tool journalled in the tool carrier and movable in the direction of its length, a motor mounted on the carrier having driving connections with the tool, a releasable lock for holding the carrier against swinging movement, and adjustable stop means for limiting the swinging movement of the carrier. i

In testimony whereof, I h a ve hereon o subscribed my name this 16th day of April, 19-28.

' F. N. IVA PPAT, 

